1158171452 has 12 divisors (see below), whose sum is σ = 2027896416. Its totient is φ = 578772480.

The previous prime is 1158171433. The next prime is 1158171473. The reversal of 1158171452 is 2541718511.

It is a super-2 number, since 2×1158171452² = 2682722224455576608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69893 + ... + 84860.

It is an arithmetic number, because the mean of its divisors is an integer number (168991368).

Almost surely, 2^1158171452 is an apocalyptic number.

It is an amenable number.

1158171452 is a deficient number, since it is larger than the sum of its proper divisors (869724964).

1158171452 is a wasteful number, since it uses less digits than its factorization.

1158171452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156628 (or 156626 counting only the distinct ones).

The product of its digits is 11200, while the sum is 35.

The square root of 1158171452 is about 34031.9181357737. The cubic root of 1158171452 is about 1050.1651900345.

Adding to 1158171452 its reverse (2541718511), we get a palindrome (3699889963).

The spelling of 1158171452 in words is "one billion, one hundred fifty-eight million, one hundred seventy-one thousand, four hundred fifty-two".